Diaphragm valves

Valves of this type is a valve in which the stem between the housing and the cover is a flexible membrane (bellows). By means of the rod bellows is moved by adjusting the flow area of the valve or completely cover it. In this design the moving parts of the valve are isolated from the fluid flow, and therefore, this valve does not require replacement of the seals or of the valve. Valves of this type are designed to work with corrosive liquids or liquids containing suspended solid particles.